fmpq.com
源代码：
点击运行
<!DOCTYPE html> <html> <head> <script src="https://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"> </script> <script> $(document).ready(function(){ $("div").mousedown(function(event){ $("div").append("<br>Mouse button pressed: " + event.which); }); }); </script> </head> <body> <div style="border:1px solid black;width:400px;height:400px;">Press down any mouse buttons inside this div element.</div> </body> </html>
运行结果